Machine for making set-up boxes



June 24, 1930. 'H. J. .6055

new FOR MAKING SET-UP BOXES Filed Se t. 28 1928 5 Shepts-Sheet llllllllllIIIIIIIIIIIIIIIIID lllllllllllllllllllllllLlJ 171-256 Fatal HaztbidJI 6105s ,9 A M'w may June 24, H. J. G055 CHINE FOR MAKING SET-UP BOXES Filed Sept. 28', 1928 5 Sheets-Sheet 2 HaroidJ. 60:5

MACHINE r03 MAKING- SET-UP, BOXES Filed Sept. 28, 1928 5 Sheet-Sheet s June 24, 1930. H. J. 6085 u'cnmn FOR MAKfNG- SET-UP BOXES Filed Sept. 28, 1928 Patented June 24, 1930 ED STATES PATENT OFFICE HAROLD-J. GOSS, OF NASHUA, HAMPSHIRE, ASSIGNOR TO THE INTERNATIONAL PAPER BOX MACHINE COMPANY, OF NASHUA, NEW HAMPSHIRE, A CORPORATION OF MAINE MACHINE FOR MAKING SET-UP BOXES Application filed September 28, 1928. Serial No. 309,050.

This invention relatesto the manufacture of paper board boxes, and has particular reference to machines for. making rectangular boxes in set up form,'ready to have goods placed therein.

' The present machine'is similar to that illustrated and described in Letters Patent No.

I 1563,18 1, granted to me November 24, 1925,

and one of the objects of the present invention is to provide a machine for making boxes which are reinforced to ensure special strength at the rear corners of boxes which have foldable lids or covers,

Another object is to provide such a machine having improved means for facilitating the removal of the completed boxes from the folding or forming mechanism.

With said objects in view, the invention consists in the construction and combination of parts substantially as hereinafter'described and claimed.

' Of the accompanying drawings: I

Figure 1 is an end elevation of the machine, omitting some parts and other parts being in section.

Figure 2 represents a section on line 2-2 of Figure 1.

Figure 3 is a sectional elevation on line 33 of Figure 2. j

Figure 4 is a detail view similar to the mid dle portion of Figure 1 and on a larger scale, with parts in position to remove a box which is illustrated in section.

Figure 5 is a diagrammatic detail view of some of the parts shown at the top of Figure 3, and illustrating the operation of removing the boxes from the machine.

Figure 6 is a detail view illustrating a horizontal section through a completed box with the pressers in action against 1t.

Figure 7 is a plan View of a special type of box blank for the folding of which the present machine is particularly adapted.

1 Figure 8 is a perspective view of a completed box.

Similar reference characters designate similar parts or features in allof the views.

I For convenience when referring to the Pattent No. 1,563,184, the reference numerals below 200 employed herein are the same as those of said patentwhere the parts are the same or substantially the same, while reference numerals from and above 200 are employed herein to designate parts or features which are included in, or relate to, the present improvements. Portions of the frame of the machine are indicated at 12. As explained in the patent referred to and unnecessary to explain in detail herein, blanks are supplied by a feeding mechanism to chains 28 (Fig. 3) having pins .29, said chains being mounted at one end on sprockets 26 carried by shaft 27. The chains are guided laterally by strips 0']: ribs 30, and

the blanks are carried along under guide strips 35 (Fig. 1). While the blanks are being carried along by the chains to be delivered thereby to the folding or forming mechanism soon described, the necessary areas of the blanks receive glue as indicated by the stippled areas of Figure 7, and certain portions of the blanks are broken down as explained in said patent.

When a blank has been advanced to position to be operated upon by the forming mechanism, it is just above upwardly movable plunger mechanism and below a vertical chamber through which the blank is to be moved while being folded. To support the latter, two tie rods 94 (Figs. 2 and 3) extend across from side to side of the frame of the machine. Front and rear wall plates 95, having outwardly curved lower edges, are rigidly but adjustably carried by lugs 96 which are slotted and have screws extending into blocks 97 which are adjustably mounted on the tie rods 94. The slotted lugs 96 and the screws enable the plates 95 to be adjusted to suit different widths of boxes to be made, and the adjustable'mounting of the blocks 97 on the tie rods provides for setting the two plates at each side of the forming chamber closer together or farther apart according to the length of the boxes.

At each end of the box-forming cham- 95 xber is a pressure plate 99 (Figs. 1 and 2) tain the pressure when the two plates 99 are acting on the ends of the box. The screwthreaded stem connecting each plate 99 and slide 101 is axially rotatable relatively to the 'slide, and engages a threaded socket in the slide, said stems therefore permitting the plates 99 to be adjusted to suit dlfl'ercnt lengths of boxes.

Each shaft 104 has a sprocket (Fig. 1) driven by a chain 107 from a sprocket carried by the shaft 80 (Fig. 3). Suitable springs 109 (Fig. 2) effect outward, movement of the slides 101 and the pressers 99 after the cams 103 have performed their functions.

To guide the plungers which cooperate with the forming chamber (see Figs. 1 and 3). bearin blocks 111 are mounted on tie rods 112. lowerplunger 113, having a recessed upper face as in the patent referred to has a two-part or channelled stem 115 mounted to slide in the blocks 111. A flat-surfaced upper-plunger 116 has its stem 117 mounted to slide within the stem 115.

Arockshaft 118 (Fig. 3) has two arms 119, each connected by a link 120 to the stem 115 and has another arm 121 carrying a roll 122 which is acted upon by a cam 123 carried by shaft 80. A rock shaft 124 has an arm 125 connected by a link 126 to the stem 117 of the upper plunger 116, and has another arm 127 carrying a roll 128 which is acted upon by a cam 129 also carried by the shaft 80; Suitable springs such as indicated in Figure 3 may be employed to ensure prompt an arm return movements of the rock shaft arms and plungers.

As so far described the machine is substan- Laially the same as that of the patent referred In the present machine there is a wall plate 200 below each end presser 99 (Fig. 3), such plate being connected to and depending from 200* which is secured to a block mounted on a tie rod 94. Also in the present rested in machine, each blank is delivered by the chains 28 between side guides 201 (Figs. 2 and 3) carried by brackets 202 adjustably mounted on a tie rod 203, each blank being then ar proper position by a pair of stops- 204 consisting of upright ends of small rods mounted in blocks which are adjustably mounted on tie rod 203.

Fora purpose described hereinafter, the wall plates 99 are .provided with downwardly projecting lugs or fingers 205 (Figs. 1 and 3) each other at the proper times as hereinafter described, by the two cam lugs 211, and withdrawn by suitable springs 212.

To aid understanding of the parts of the machine next to be described, reference will first be made to the type of box illustrated by Figures 7 and 8. The blank illustrated is cut duplex and creased to provide a bottom sec.- tion a, end wall sections 6, 0, a front wall section (Z which may be of single thicknessor, preferably, of previously folded double thickness, a rear wall section d from which i the cover or lid section f extends, flaps e at.v

opposite ends of the front wall section d, triangular flaps g at the ends of the rear wall section d, and a triangular flap it at the rear end of each end wall section b.

By the employment ofthe terms end wall sections, I do. not limit myself to boxes which are Wider from side to side than from front to rear. Said terms are employed for the sake of brevity of description but meaning thatitwo opposite wall sections are the front and rear Wall sections While the other two are the side sections herein referred to asend wall sections. Of course the blanks may be ofzsuch shape as to make square boxes or others which are of greater area from the front to the rear than their lateral area.

Each such blank is delivered between the side guides 201 and above the plunger 116 (Fig. 3) and against the stops 204, with the stippled areas of Figure 7 with the proper lateral portions of the blank broken down by mechanism such as explained in the patent referred to. Then the plungor 116 rises, immediately followed by the plunger 113, lifting the blank in such manner that, by the cooperation of the outwardly carrying glue and curved lower ends of the plates 95 and 200,

and the corner fingers 205, the blank is partially folded to a condition so that upon the next ensuing movement of the tucker blades 206 toward'e'agli other, the end wall sections of the blank""are bent in so that the rising plunger 113 Wlll bend the flaps 0 up insideto v 95' sections, front wall sections, and rear Wall ferred to. During the upwardmovement' of the blank or box just described, the triangular flapsg and h are turned to such relative positions that the flaps g are in between the folded sections 5, 0, of the double-thick end walls as indicated by dotted line in Figure 8, while the flaps h extend around behind and outside of the rear Wall section cl" which carries the lid or cover f. This results in, when the box is completed, providing flaps g, h, which extend in opposite directions'around the rear corners of the box,

' which corners, in boxes having lids or covers,

are usually the weakest and most liable to break down. The locations of the flaps h back of the cover-carrying section (1' so reinforces the rear corners of the box that opening of the cover will not break or tear down said corners, and the location of the flaps 9 between the glue-carrying surfaces of the doubled Wall sections 1) 0 ensures their reten-' tion in secured positions after the pressing.

operations of the plates '99.

To effect the object or result just explained,

, it is desirable to very firmly press the gluecarrying flaps h'in against the ends of the wall d while the box is on the former consisting of the plunger s. The mechanism for effecting this-will now be described.

Projecting through openings in the plates 95 at one side of the forming chamber (see Fig. 1) are two pressers 213 mounted in or carried by slides fitted to slideways in blocks 214 supported by tie rod 9% (Figs. 2 and 3), and each slide having a rear block 215 carrying a roll 216' bearing against a cam 217 carried by a shaft 218. Springs 219 between the members 214, 215, act in opposition to the cams. The shaft 218 and its cams are ro tated in proper timed relationship by a chain 220 driven from a suitable part of the machine. The timing is such that the pressers 213 are actuated by the cams 217 to exert pressure on the flaps h just after the end pressers 99 have acted. Preferably the end pressure is maintained briefly while the side pressers 213 are acting, so as to oppose any tendency of pressure-on the flaps h to cause any outward springing of the endwalls of the box.

The reason for actuating the pressers 213 after the end pressers 99 have acted, as just described, will now be explained.

As has been stated herein,'the wall portions 6 0 carry adhesive. It is important, of

course, that such adhesive shall be made effective. Proper adhesion however, is re sisted by the inherent tendency of the flaps ping action on the folded glue-carrying 'p0r-.

tions 5 0 the pressure on the flaps h would be liable to be so transmitted as to act on the ends of the portions b c and the flaps g which are-then bet-weenthe portions 6 c and displace them from their proper relative positions. Therefore the pressers are so actuated as to apply the end and rear pressures in timed sequence and synchronized relationship. In other words, the proper making of the boxes is effected by timing and syn? chronizing the actions of the mechanism whereby the two pressures are not primarily applied simultaneously, but act in a timed sequence to cause the end pressers 99 to move in one direction and reach their inward positions shortly in advance of the action of the pressers 213 which move in another direction against the surfaces at the ends of the rear wall of the box, the result being to first apply pressure in one direction to grip and hold the flaps g, and then apply pressure in another direction and grip the flaps h during a continuance of the first-applied end pressure, so

that the angularly related pressures will not interfere 'with each. other.

After completion of each box as described, the pressers retreat and the box is removed from the plungers 113, 116, which have acted as the inner former for the box, and said to an arm 2280f a rock shaft 229, said rock shaft having another arm 230 connected to apitman rod 231 which has a forked lower end (Fig. 3) straddling the shaft 27 and having a roll 232 riding on a cam 233 carried by said shaft 27. The rock shaft 229 has an arm 4 234 (Fig. 1) acted upon by a spring 235 to ensure the lowering movement of the rod 223 and its hook fingers 221. The timing of the rising movement is such that just after the completion of the box as has been described, the fingers 221 engage the box as illustrated by Figure 4 and lift it from the position indicated by dotted lines in Figure 5 to a sufficiently elevated position to permit it to be caught by a pair of revolving fingers 236 which deliver each box to a suitable re- Y ceptacle or table. Said fingers 236 are-adjustably mounted in blocks 237 which are carried by ashaft 238 having a sprocket 239 (Fig. 3) connected by a chain 24:0 with a sprocket of one of the shafts 1042 (Fig. 1). Said shaft 238 is continuously rotated once for each operation of forming a box, and in such timed relationship that the fingers 236 are about in the position illustrated by Fig ure 3 just as a box is completed, then arrive in about the position indicated by dotted lines in Figure 5 as the box is in, or nearly in, its uppermost lifted position, and then catch up with the box (the tips of the fingers entering the box), and the further revolution of the fingers 236 removing the box from the lifters 221v as illustrated by full lines in Figure 5. As the fingers 236 revolve further, the box drops 0H from them, thereby freeing said fingers to engage and remove the next completed box elevated by the lifters 221.

Having now described my invention, I claim:

1. In a machine for converting blanks into boxes, a forming chamber. a plunger movable into and from said chamber, a pair of fingers spaced to engage opposite portions of each completed box, means for shifting said fingers toward and from the plunger, and means for removing each box from said fingers.

2. In a machine for converting blanks into boxes, a forming chamber, a plunger movable into and from said chamber, a transverse rod above said chamber and plungenmeans for raising and lowering said rod, a pair of fingers depending from said rod, said fingers having their lower ends formed to engage opposite portions of a completed box in said chamber and elevate said box, and rotary fingers in position to engage each elevated box and remove it from the machine.

3. In a machine for converting'blanks into boxes, a forming chamber, a plunger movable into and from said chamber, pressers movable toward and fromv the end faces of the plunger, and pressers movable toward and from a side face of the plunger, means being provided for timing the action of the angularly related pressers to cause the end pressers to begin. theirv action in advance of the action of the other pressers.

4. The method of making boxes with adhesively united reinforced corner portions, said method consisting in forming blanks with portions to provide inner and outer flaps for said corner portions of the boxes, folding the blanks with said flaps extending around the corners in opposite directions, and applying pressures in different directions and in timed sequence to said corner portions.

5. In a machine for making set-up boxes from blanks which have front and rear wall sections and duplex end wall sections and corner flaps extending from all of said sections, a blank-supporting form, and. means for folding said blanks about the form with said machine having a blank-supporting,

form, means for folding said blanks about the form with the flaps of the front'andrear Wall sections enclosed in the duplex end wall sections and with the flaps of the end wall sections extending around and secured to the outer surface of another wall section, and movable pressers for acting on said flaps of the end wall sections.

7. A machine for making set-up boxes from blanks which have front and rear wall sections and duplex end Wall sections and corner flaps extending'from the end wall sections and from the ends of the rear wall sections, said machine having a blank-supporting form, and means for folding said blanks about the form with the flaps of the rear wall sections enclosed in the duplex end wall sections and with the flaps of the end wall sections overfiying the rear wall sections.

8. A machine for making set-up boxes from blanks which have front and rear wall sections and duplex end wall sections and corner flaps extending from the end wall sections and from the ends of the rear wall sections, said machine having a blank-supporting form, means for folding said blanks about the form with the flaps of the rear wall sections enclosed in the duplex end wall sections and with the flaps of the end wall sections overlying the rear wall sections, and means for exerting localized direct pressure on the overlapping flaps and wall sections.

In testimony whereof I have afiixed my,sig-

nature.

HAROLD J. GOSS. 

